There are a ton of these physics videos... here's a few.

OMG-
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barrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsb arrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsba rrelsbarrelsbarrelsbarrelsbarrels
barrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsb arrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsba rrelsbarrelsbarrelsbarrelsbarrels
barrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsb arrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsba rrelsbarrelsbarrelsbarrelsbarrels
barrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsb arrelsbarrelsbarrelsbarrelsbarrelsbarrelsbarrelsba rrelsbarrelsbarrelsbarrelsbarrels
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http://www.youtube.com/watch?v=YG5qDeWHNmk


http://www.youtube.com/watch?v=WLoe-_E4q8Q


Game Play: Sun glare enhanced, sky altered:
http://www.youtube.com/watch?v=pHAKg...eature=related